SpO₂/FiO₂ Ratio Calculator Sponsored Advertising placement SpO₂/FiO₂ Ratio Clinical Decision Tool Calculates the peripheral oxygen saturation to inspired oxygen fraction ratio. SpO₂ i Oxygen Saturation × Peripheral oxygen saturation measured by pulse oximetry. Accepted units % Used by SpO₂/FiO₂ Ratio Clinical noteAccuracy decreases with poor perfusion, motion, dyshemoglobinaemia and some devices. ReferenceRice TW et al. Chest. 2007;132:410–417. Learn more → % FiO₂ decimal Calculate SpO₂/FiO₂ Ratio Clear Calculator ☆ Log in to save Save this calculator to your MDPDA account. + Add to Toolkit Log in to save incomplete calculator progress and return later. Log in to save progress Clinical Decision Support Only MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress. Read our Clinical Disclaimer Sponsored Advertising placement
